反应详情

To a solution of 3′-acetyl-5′-chloro-3-fluoro-2′-methoxy-6′-methylbiphenyl-4-carboxylic acid (70 mg, 0.2 mmol), azetidine-3-carbonitrile hydrochloride (30 mg, 0.25 mmol) and benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (0.11 g, 0.25 mmol) in N,N-dimethylformamide (0.42 mL) was added N,N-diisopropylethylamine (0.08 mL, 0.46 mmol). After being stirred at room temperature for 2 h, the mixture was diluted with ethyl acetate, washed with water, brine, dried and concentrated to dryness. The residue was purified on silica gel, eluting with 0 to 60% ethyl acetate in hexane, to give the desired product (25 mg, 30% in 3 steps). LCMS calculated for C21H19ClFN2O3 (M+H)+: m/z=401.1. found: 401.1.

1. washwashed with water, brine
2. customdried
3. concentrationconcentrated to dryness
4. customThe residue was purified on silica gel
5. washeluting with 0 to 60% ethyl acetate in hexane